Pneumatic tire.



L. R. POSCHADEL.

v PNEUMATICTIRE.

Patented June 11, 1918.

pertains to make and use the same.

f more especially to provide simple, practical wear to which a 4'tire is ordinarily subjected c UNITED sTATns rATENT oFmoE.

LEONARD n'. roscrmnnr., or `uri,INVAUKnr,V WISCONSIN.

PNEUMATIC TIRE.

To all 'whom z't may concern:

Be i 4known that I, LEONARUR. PosoHA DEL, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Pneumatic Tires; and I do herebyy declare vthe following to be a full, clear, and exactdescription of the'invention, such as will enable'others skilled in the art to which-it apf The invention relates to improvements in pneumatic tires. v l

The object of the present invention is to improve the construction of pneumatic-tires and comparatively inexpensive means. for protecting the tread portion of ythe outer tube or shoe and to provide a strong and durable construction adapted to receive the and capable of efl'ectivelypreventing lpuncture of the inner tube.

With these and otherobjects in view the invention consists in the. construction and novel combinationk and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings and pointed out in the claims hereto appended, it being l.understood that various changes in the form', proportion and minor details ofconstruction may be resorted to without departing from the spirit or sacrificing anyiof-the advantages of the invention. f

In the drawing- Figure 1 is a plan view of a portion of the outer tube or shoe of a pneumatic tire embodying the invention,

Fig. 2 is a transverse sectional view ofl the same.

Like numerals of reference designate corresponding parts in the several views of the drawing.

In the accompanying drawing in which is illustrated the preferred embodiment of the invention, 1 designates an outer tube or shoe of the clencher type provided at its outer portion with an annular band 2 of leather or other flexible material having a concaved transversely curved inner face 3 to conform to the configuration of the outer tube or shoe and provided with a flat or transversely straight outer face 4 to receive and support a. tread section 5. The exible band which saddles the outer portion of lthe outer tube thickened side portions which are Specication of Letters Patent.

Application led April 16,

Patented June 11, 1918.

1915. seria1No.21,71s.

cured to the outer tube-by rivets 7 or other suitable fastening devices piercing thethickened portion of the annular band 2 and the outer tube 1 and arranged at an angle as clearly shown in Fig. 2 of the drawing. The fastening devices 7 converge inwardly and the thickened portions 6 ofthe annular band 2 are preferably rounded as shown.

y The tread Section5 which issubstantially oblong in cross section is composed of spirally wound or coiled strands 8 which may consist of small cablesor twisted wires of circular or other form. The strands 8 which mayv also be solid and of at or oval form or any other desired configuration are preferably constructed of steel to render them resilient and flexible and the strands are preferably formed into threey rows as illustrated in Fig. 2 of the drawing but any desired number of rows may of course be employed to adapt the tread sectionto the charthe inner tube, notrshown, and while the tread section is shown arranged eXteriorly ofthe outer tube it may of coursebe contained within` the material composing the outer tube and it alsoy may be applied' to a *tire` in the form of a shoe or tire strap.

Also the layers or rows'of strands may be connected with each otherV and with the flexii ble strip 3 by fastening devices 9 consisting of split rivets provided with heads 10 and passed through and arranged between the wires composing the strands 8. The sides or legs of the fastening devices 9 are spread to engage the adjacent strands and the fastening devices of the innermost strands pierce the flexible band or strip and are clenched against the inner face thereof.

In practice the strands of the tread section will be wound as short or closely as possible in'order to reduce to 'a minimum any tendency of the tread section to unwind when the outermost strands become worn.

It will be seen that the tread section which extends circumferentially around the tire and which is of substantially the width of the tread is adapted to materially increase the life and durability of a pneumatic tire and that while it is shown applied to a tire having an outer tube of the clencher type it may be readily embodied in any character af Pneumatic tire Also it Will be seen that the tread section presents a corrugated tread surface Wliich is adapted to prevent 'the' tire" fromslipplrfgo skidding.

What is claimed is:

l. The combination with a pneumatic ,tilre substantiallycircular inoro'ss section, of av circumferentially curved continuous=` annul lar tread section composed of spirally coiled 'metallic strands forming contiguous flexible' cables' of relatively small-'diameterextending circumferentiallyf aroundI the tire, said treadl'section being substantially rectangular in cross section to'pr'esent continuousfand'cylindrical inner and outersuie faces and permanently mounted in' an eX- teriorly projectingposition so as toV engage the" surfaceof tlie road and A'receive thefwear and prevent5 the tire from coming contact Witli'- the same.'

2. The combiation'witli a pneumatic tire substantially circular in'crossi sectiomoffa circumferentially curved continuous annular tread sectioncomposed of' a' plurality of'- concentriclayers o'fspi'rally coiledmetallic strands` forming relatively,V small cables extendingcircumferentially around the tire,- said curvedv 'section being substantially rectangular'in crosssection' to presentf inner'and outer surfaces and constituting-'fa 'permanent 'portion of the 'tire and mounted in an eXteriorly }g roject`ingv position soy as to'engage vthe surface'of the road; andV re` ceive theWear and prevent` the'tiref from comingf in Contact' with* the said road sur`- face.

3. The Vcombination Witlr a pneumatic tire substantially circular in crossf section; `of a circumferentially curved continuous annular tread sectionv composedY of a" plurality bles* extending circumferentially around the tire,V said curved section being substantially rectangular in cross section to present inner and outer surfaces, means for mounting the treadIX section on the pneumaticftirem `asuperilnposedfprojecting position, said means consisting of a flexible band arranged circumforen-tially`A of the tir'efard seated y onthe`A tread ofl the tirevexteriorly! of thef same' and-presentiiigffl a continuousouter cylindrical surfaceifto the saidtread section and Y an Vinner concave face i to the'r tire and eXtendingla-terallv `beyond the curved tread 'section Vateaclr-'sidei of the yseme lto provide exterior side attaching*A portions, concealed ifasteninglmeans carried: by vtheI tread: section'` aridi 'pierc'ingthe' band "between Atlfief slide edges thereof" and terminating:y short-*of the tirel so as t'of not piercey the latter, fand'. separate sidefastening devices -locatedfbeyond the tread@ section and piercingv thell sdef attaching portions of the bandv and the: tire.

" 4 vA'"pneumatic tire of the class described 'including an outer tube, and; altread section extending clrcu'mierentiallyv around# V'the outer tubeand composed of: spira'llyf yWound provided Withf asteningldevicesicarried by certain .offthe'strafnds und each li aving= sides or legs spread to embraceftwo of 4the 'strands of; the: treadf'section.

or twisted strands@saidf"treadsectionfbeing 

